| Size Designation Pipe Outside Diameter |
Coupling | Minimum Length N˪ |
Diameter of Recess Q |
Width of Bearing Face, Regular b |
Maximum Bearing Face Diameter |
Mass | ||||
| Regular | Special Clearance |
Regular with Special Bevel Bƒ |
Special Clearance Bƒ |
Regular | Special Clearance |
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| Outside Diameter | ||||||||||
| D (in) | D (in) | W (in) | W (in) | (in) | (in) | (in) | (in) | (in) | (in) | (in) |
| 2-3/8 | 2.375 | 3.063 | 2.910 | 4 7/8 | 2.656 | 5/32 | 2.828 | 2.752 | 3.43 | 2.35 |
| 2-7/8 | 2.875 | 3.668 | 3.460 | 5 1/4 | 3.156 | 7/32 | 3.381 | 3.277 | 5.30 | 3.42 |
| 3-1/2 | 3.500 | 4.500 | 4.180 | 5 3/4 | 3.813 | 1/4 | 4.125 | 3.965 | 9.03 | 5.24 |
| 4 | 4.000 | 5.000 | - | 6 | 4.313 | 1/4 | 4.625 | - | 10.63 | - |
| 4-1/2 | 4.500 | 5.563 | - | 6 1/4 | 4.813 | 1/4 | 5.156 | - | 13.33 | - |
| Refer Figure 5 | ||||||||||
| The size designation for the Coupling is the same as the size designation for the Pipe on which the Coupling is used. | ||||||||||
| For Regular Couplings, Tolerance on Outside Diameter W: ± 1 % | ||||||||||
| For Special Clerance Coulings, Tolerance on Outside Diameter W: ± 0.015 in. | ||||||||||
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